Twenty-one Music Stars Under 21

Before he turned 21, Yahoo! On the Road artist Patrick Stump of Fall Out Boy had already recorded the group’s breakthrough album, “From Under the Cork Tree.” We’re spotlighting today’s young stars before they turn 21. These artists are burning up the charts and setting the music community on high buzz alert. Aside from the familiar pop star faces, we’ve also compiled the best and most fresh up-and-coming acts from around the world to keep on your radar. -- By Paul A. Rosales